Catalytic effects in coal gasification. Quarterly report, October-December 1980

Technical Report · Fri May 01 04:00:00 EDT 1981

OSTI ID:6434559

Padrick, T D; Dees, D D

This quarterly report summarizes the activities of Sandia National Laboratories' program on mineral matter effects in coal gasification. The objective of this program is to develop a fundamental understanding of the mechanism of the catalytic effects of mineral matter on coal gasification, and to use this knowledge as the impetus for future process improvements. We have identified reduced iron as the catalytic form of pyrite in the hydrogasification of a Pittsburgh Seam coal. We have observed catalytic activity of reduced iron that depends on precursor species in the following order Fe/sub 2/O/sub 3/ > Fe/sub 3/O/sub 4/ > FeS/sub 2/ > Fe. We have also found that, for a given iron compound, the catalytic activity is strongly dependent on particle size, with increasing activity for smaller average particle size. Using 5% by weight Fe/sub 2/O/sub 3/ (approx. 5 ..mu..), we measured a factor of 15 increase in the hydrogasification rate for a Pittsburgh Seam coal at 1000/sup 0/C and one atmosphere H/sub 2/. Determination of the product gas composition indicates that the increase in gasification rate results primarily in methane production with reduced iron catalyst.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6434559
• Report Number(s): SAND-81-0769
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
ALKANES
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL GASIFICATION
DATA
ELEMENTS
EXPERIMENTAL DATA
GASIFICATION
HYDROCARBONS
HYDROGENATION
INFORMATION
IRON
IRON COMPOUNDS
IRON SULFIDES
METALS
METHANE
MINERALS
NUMERICAL DATA
ORES
ORGANIC COMPOUNDS
PARTICLE SIZE
PYRITE
PYRITES
REDUCTION
SIZE
SULFIDES
SULFUR COMPOUNDS
SULFUR ORES
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS